I need to find a web site i was at earlier how can i go back in my history to find it?

I TRIED ENGINE SEARCH BUT STILL THE SITE HAD SOME REALLY INEXPENSIVE PDAS AS I WANT A PDA WITH A WIRELESS SCANNER TO SCAN BOOKS ISBN # TO CHECK PRICES WHEN I AM OUT LOOKING FOR BOOKS|||Tools


Scroll down to toolbars


Now in the window that pops up click History